de.schaeuffelhut.android.openvpn.tun.DeviceDetails.java Source code

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Here is the source code for de.schaeuffelhut.android.openvpn.tun.DeviceDetails.java

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/*
 * This file is part of OpenVPN-Settings.
 *
 * Copyright  2009-2012  Friedrich Schuffelhut
 *
 * OpenVPN-Settings is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * OpenVPN-Settings is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with OpenVPN-Settings.  If not, see <http://www.gnu.org/licenses/>.
 *
 * Report bugs or new features at: http://code.google.com/p/android-openvpn-settings/
 * Contact the author at:          android.openvpn@schaeuffelhut.de
 */

package de.schaeuffelhut.android.openvpn.tun;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;

import de.schaeuffelhut.android.openvpn.util.tun.TunPreferences;
import org.apache.commons.io.FileUtils;

import android.content.SharedPreferences;
import android.text.TextUtils;
import android.util.Log;
import de.schaeuffelhut.android.openvpn.shared.util.SystemPropertyUtil;

public class DeviceDetails {
    final String kernelVersion;
    final String pathToTun;
    final String deviceDetails;

    public DeviceDetails(SharedPreferences pref) {
        kernelVersion = readKernelVersion();
        pathToTun = findPathToTun(pref);
        deviceDetails = collectDetails();
    }

    private static String readKernelVersion() {
        final String procVersion;
        try {
            procVersion = FileUtils.readFileToString(new File("/proc/version"));
        } catch (IOException e) {
            // LOG via ACRA
            Log.e("OpenVPN-Settings", "reading /proc/version", e);
            return "unknown";
        }

        if (procVersion.startsWith("Linux version "))
            return procVersion.substring("Linux version ".length(),
                    procVersion.indexOf(" ", "Linux version ".length()));

        return procVersion;
    }

    private static String findPathToTun(SharedPreferences pref) {
        String pathToTun = TunPreferences.getPathToTun(pref);
        if (!TextUtils.isEmpty(pathToTun) && new File(pathToTun).exists())
            return pathToTun;

        if (new File("/system/lib/modules/tun.ko").exists())
            return "/system/lib/modules/tun.ko";

        return "unknown";
    }

    private static String collectDetails() {

        StringBuilder sb = new StringBuilder();

        detectFiles(sb);
        readSystemProperties(sb);

        return sb.toString();
    }

    private static void detectFiles(StringBuilder sb) {
        sb.append("Detecting files in default locations:\n");
        detectFile(sb, "/system/xbin/openvpn");
        detectFile(sb, "/system/bin/openvpn");
        detectFile(sb, "/system/xbin/busybox");
        detectFile(sb, "/system/sbin/busybox");
        detectFile(sb, "/system/bin/busybox");
        detectFile(sb, "/system/lib/modules/tun.ko");
        detectFile(sb, "/system/bin/su");
        detectFile(sb, "/system/xbin/su");
        detectFile(sb, "/system/sbin/su");
        sb.append("\n");
    }

    private static void detectFile(StringBuilder sb, String file) {
        sb.append(file);
        sb.append(' ');
        if (new File(file).exists())
            sb.append("exists");
        else
            sb.append("not found");
        sb.append('\n');
    }

    private static void readSystemProperties(StringBuilder sb) {
        sb.append("System Properties (ro.build*, ro.product*, ro.revision) :\n");
        HashMap<String, String> properties = SystemPropertyUtil.getProperties();
        ArrayList<Entry<String, String>> entrySet = new ArrayList<Entry<String, String>>(properties.entrySet());
        Collections.sort(entrySet, new Comparator<Entry<String, String>>() {
            public int compare(Entry<String, String> lhs, Entry<String, String> rhs) {
                return lhs.getKey().compareTo(rhs.getKey());
            }
        });
        for (Map.Entry<String, String> e : entrySet) {
            String key = e.getKey();
            if (key.startsWith("ro.build") || key.startsWith("ro.product") || key.startsWith("ro.revision")) {
                sb.append(key);
                sb.append(": ");
                sb.append(e.getValue());
                sb.append('\n');
            }
        }
        sb.append("\n");
    }
}